【作者】 孙涛； 王庆利； 毛明扬；

【Author】 Sun Tao,~*Wang Qingli,Mao Mingyang (College of Civil Engineering,Shenyang Jianzhu University,Liaoning,Shenyang,110168,China)

【机构】 沈阳建筑大学土木工程学院；

【摘要】 为了解圆CFRP-钢管混凝土受弯构件的滞回性能,以3个试件的试验研究为基础,对试验结果进行分析。分析表明,CFRP对圆钢管混凝土有很好的环向约束和纵向增强作用,所有试件的中截面荷载-挠度滞回曲线均较为饱满,表现出很好的滞回性能。纵向CFRP可以提高试件的承载力和等效粘滞阻尼系数,并能减缓刚度退化。试件的强度退化不明显。试件的挠曲线近似为正弦半波曲线。钢管和CFRP管可以协同工作。更多还原

【Abstract】 3 specimens were experimentally investigated in this paper to study the hysteretic behaviours of the concrete filled circular CFRP-steel tubular flexural members.Analysis results indicated that,CFRP can provide circumferential confining effect and longitudinal strengthening effect for the concrete filled circular steel tube effectively.Mid-span load versus deflection hysteretic curves of all specimens are good and display perfect hystereticbehaviours.Longitudinal CFRP can enhance strength and equivalent viscous damping coefficients of the specimens,also,can delay stiffness degradation.There is no obvious strength deterioration. The deflection curves of all specimens are approximately half sin wave,and the steel tube and its outer CFRP material can cooperate.更多还原